Velocipede



UNITED STATES PATENT Ormea THOMAS MILLVARD, OF SHEPHERDS BUSH, ANDCHARLES LENI, OF HAM- MERSMITH ROAD, COUNTY OF MIDDLESEX, ENGLAND,ASSIGNORS TO THE POPE MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT.

VELOCIPEDE.

JEEICATION forming part of Letters Patent No. 307,133, dated October 28,1 884.

lo @ZZ whom, it may concer/L:

Be it known that we, THoMAs MILLWARD, of Shepherds Bush, and CHARLnsLEM, of Hammersmith Road, both in the county of 5 Middlesex, England,have jointly invented certain new and useful Improvements inVelocipedes, (for which we have obtained Letters Patent in GreatBritain, No. 1,918, dated January 22, 1884,) of which the following is a1o specitication.

Our improvements relate more particularly to that part of velocipedemechanism known as the driving-gear, and to the class called epicyclicspeed and power gears,7 the object of which is to secure the advantagesof greater power with less speed on ascending` grades, and less powerwith greater speed on descending,` or level grades; and our particularcontrivance may be briefly called the ec- 2o centric77 speed and powergear.

The object of our invention is to produce a driving-gear applicable toeither a driving or a driven shaft, and which shall be simple,ihoroughly effective, and less expensive to 2 5 manufacture than othersheretofore used.

Our invention will be more clearly understood from the followingdescription, taken in connection with the drawings, in which-- Figure lshows in elevation a chain-wheel 33 with driven and driving pinions inposit-ion.

Fig. 2 shows a back view of cam with eccentric ring in position, indotted lines. Fig

is a perspective view of chain-wheel and pin- E ions on a reduced scale.Fig. 4 is a front view 35 of can] andv eccentric ring, also on reducedscale. Fig. 5 shows in section our improve `ments in one form on ashaft, and Fig. (i shows the sanne in elevation.

The saine letters of reference refer to simi- 4o lar parts throughoutall the figures.

A is a shalt or axle. Running loose upon it is the chain-wheel. orsprocket B. On the face of sprocket B are xed two studs, C, upon whichwork the two pinions, D, which gear into the driving-pinion E,

which is keyed fast on axle A.

Fixed on the pinions D are plates or cranks F, at the ends of which arestuds upon which a Application filed June 4, 1884. (No model.) Patintedin ling-land JanualgtY E22, 1584, No. 1,918.

ring, G, is fitted, which works on the eccentrie cam H, which is looseon aXle A. y

Up against t-he cani His a collar, K, and sliding upon this collar K isclutch I. By sliding the clutch I along and locking it into cam H thcwhole forms part and parcel of the chai nwheel and revolves together,andspeed is 55 obtained, while, by releasing the clutch I from thecam andlocking it to frame of machine, the cam is held fast from rotating,thepinions D are driven round at adecreased rate in proportion to thenumber of teeth in driving and 6o driven pinion, and power is obtained.By the aid of the sliding clutch the cam may be locked either to thechain-wheel or to the spindle to obtain. speed, and byreleasing it fromthe chain-wheel and locking it to the frame or other suitable part weobtain power.

In relative proportion to the sizes of the driving-pinions and pinionsdriven we vary the power to any extent.

It is obvious that modifications in form and 7o arrangement of the partsmay be made Without departing from the spirit of our invention` and wedo not limit ourselves, therefore, to the form shown and described.

`Ne claim as new and of our inventionl. The described combination andarrange! ment of pinions and eccentrics, essentially as setforth.

2. In an epicyclic differential speed gear, the combination of apinion-wheel keyed on a So shaft, two pinions working on studs on asprocket-wheel free on the shaft and gearing with pinion on the shaft,held in position to rotate round the driving-pinion by a cam,essentially as set forth. l

3. The combination of spur-wheel E, pinions D I), cranks F F, ring G,cam H, and clutch I, constructed and adapted to operate essentially asset forth. l

THOMAS MILLVARD.

CHARLES LENI.

London, lV. (l.

